GET /version

clinicaltrials.gov:clinicaltrials.gov-api

Summary: Get API version
Operation ID: getVersion
Auth: none

Returns the current API version and data timestamp. This is the simplest endpoint in the API and serves as a health check - it doesn't require any parameters and always returns the API version string (e.g., "2.0.5") and the timestamp when the data was last updated. Call this endpoint when you want to verify the API is online, check which version is deployed, or confirm your integration is working before making more complex queries. The response is always small and fast, making it ideal for monitoring and testing connectivity.

Original spec description

Returns the current API version and data timestamp.

Usage Tips

- This endpoint accepts no parameters and returns a static response - Use as a quick health check before attempting complex searches - The dataTimestamp indicates when the underlying database was last refreshed - Response is always small (~70 bytes) and fast

Examples (1)

TitleTypeURLAction
Get API version curl https://clinicaltrials.gov/api/v2/version

Probe History

Latency

Status Codes

TimeStatusLatencySize
2026-03-23 09:01:12.055890 200 217ms